Thread: Finding Factorial in C language.

Hi,

I am working on a program that asks a user to enter a # between 1 to 50 and finds the factorial of that. It uses recursive function to find it.

Here is what I got so far:

Code:

include <iostream>

using namespace std;

//function prototypes

int getNum();
int fact(int);
void printResult(int, int);


int main()
{
int num;
int ans;

num = getNum();
ans = fact(num);
printResult(num, ans);

cout << endl << endl;
}
int getNum()
{
	int num;
	cout << "\nEnter a number:";
	cin >> num;
	return num;
}
int fact(int num)
{
	
	if (num == 0)
		return 1;
	else 
		return num * fact(num - 1);
	
}
void printResults(int num, int ans)
{
	cout <<"\nfactorial of" << num << "is : " << ans;
	
}

Its not working, can some please help me solve this problem.

Thanks

If you want to hang on to this for your C++ class, then you should note that 50! does not fit in an int datatype. Either restrict the domain (a lot) further, or use a different data type.